The zip file contains the original National Survey on Drug Use and Health, and 3 Stata .do files to replicate the estimates produced in the paper:

1. mml-data.do creates the analysis dataset from the original NSDUH data files.
2. mml-analysis.do creates the tables and estimates in the paper.
3. mml-master.do runs both mml-data and mml-analysis in succession. 

You will need to set the current directory in Stata to same location where you download the NSDUH datasets. You should be able to simply run mml-master to replicate all of the estimates in the paper.